Welsh actor Christian Bale is supposedly facing questioning by police over claims he assaulted two family members in London this weekend.

The Press Association reports Scotland Yard has received a complaint from the star’s mother and sister over an alleged incident in central London which took place Sunday night.

The actor was in town to promote his newly released film, “The Dark Knight” and was in his suite at Park Lane’s Dorchester Hotel when he allegedly “lashed out.” His mother, who is in her 60s, and his sister, who is 40, both living in Dorset, reportedly went to a Hampshire police station to make their allegations formally.

The complaint regarding the 34-year-old actor was then passed to the Metropolitan Police for further investigation, reports the Press Association.

Despite the alleged incident, Christian Bale attended the first European screening of “The Dark Knight” in full star glory Monday night, at the Odeon West End cinema in Leicester Square. He was joined by co-stars Aaron Eckhart, Maggie Gyllenhaal and Michael Caine.

London’s Metropolitan Police have meanwhile confirmed that they have “received an allegation from another force in relation to an alleged incident in central London.”

UK newspaper “The Sun” was first to report the story.

Whatever trouble may have happened Sunday night, Christian Bale can well be proud of his new project. Film critics have given it a warm welcome, fans as well and the box office results exceeded everyone’s expectations.

According to the latest estimate from distributor Warner Bros. Pictures, “The Dark Knight” earned $158.4 million in ticket sales in the Friday thru Sunday period in theatres across North America.

The film thus beat the previous North American box-office opening record of $151.1 million which “Spider-Man 3” set last year.

Christian Bale first donned the batsuit in 2005, in the Chris Nolan-directed “Batman Begins.”

He will next appear as John Connor, in “Terminator Salvation,” due out next year.